Bumper



FIG. 1 is a rear elevational view of a bumper showing my new design.

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is an enlarged cross sectional view thereof taken along line 4--4 in FIG. 1; and

FIG. 5 is an enlarged fragmentary front perspective view thereof with a portion of the bumper broken away and omitted for convenience of illustration.

The broken lines in the drawings are for illustration purposes only. 

The ornamental design for a bumper, substantially as shown and described. 